Merge pull request #1383 from timlinux/develop

Added xml files for test data
Merge pull request #1384 from timlinux/develop

Added minimum needs help and placeholders for id help
Merge pull request #1385 from timlinux/develop

Added user extents help and placeholder for id help
Update README.md
Enable only quick tests in travis
Fix unable to open OSM Downloader Dialog.
Merge pull request #1392 from akbargumbira/develop

Fix unable to open OSM Downloader Dialog.